Describe in detail what happened including the concern or potential issue, the environment (weather, terrain, fire behavior, etc), and the resulting health issue.

NPS Mesa Verda Colorado Engine A was detailing at Lake Meredith NRA for fire severity outside of Amarillo, Texas. During the detail, the engine crew was traveling about 45 mins from the hotel to the fire cache and back at night. On 3/23/2017 LAMR area was experiencing very high sustained winds 25 - 35 mph and gust up to 55 mph. Eng A was returning to the hotel for the night. After traveling through a small rural town, the driver was accelerating up to the speed limit when the crew heard a loud bang followed by a shower of glass. The crew immediately pull to the side to inspect what had happened. After inspecting the engine, it was determined that two sheet metal screws on the driver side of the emergency light bar detached from the roof of the vehicle and swung backward and coming down in contact with the rear window of the vehicle. No of the crew sustained any injuries. All supervising personnel were immediately contacted followed by the LAMR Law Enforcement who came out to take an official report. While waiting for the Law Enforcement Ranger the crew removed the light bar to prevent any further damage to the engine.

Immediate Action Taken

Reporting Individual : please describe actions you took to correct or mitigate the unsafe/unhealthful event.

This was the first assignment of the year for this engine and crew. While daily vehicle inspections were conducted per S.O.P. no one had physically checked the mounting hardware for the light bar. The crew also questions the validity of 4 sheet metal screws into the roof of the vehicle as a legitimate mounting method. Further inspections and conversations will be conducted with the home unit FMO upon crew's return on 3/26/2017 about this incident.

It is recommended to all personnel who have a top mounted emergency light bar to check the mounting before the fire season gets underway.